Geologists have developed a relatively well-understood model, called the scarp retreat model, to explain how this type of environment evolves. These data fall on a well-defined line indicating a crystallization age for the anorthosites of 4. You can be assured our editors closely monitor every feedback sent and will take appropriate actions. Not all ages determined for anorthosites, however, are as old as we expected--one appeared to be only 4. Processes such as convectionvolcanism, weatheringand erosion have largely obliterated the primary signatures that would inform us about the mechanisms and timing of planetary formation in the inner Solar System.
This also helps researchers looking for evidence of past life on Mars.
The Age of the Moon
Week 5. The exposure of rock in Yellowknife Bay has been caused by wind erosion. Geologists have developed a relatively well-understood model, called the scarp retreat model, to explain how this type of environment evolves. Our work has focused on a small group of lunar anorthosites that have enough pyroxene to enable mineral isochrons to be determined. Gopalan, et al. What is empirically known about the shape and size of the Universe?